Thermodynamic Analysis for CAES-HAT System Combined Power and Heat Generation

doi:10.7652/xjtuxb201607005

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Thermodynamic Analysis for CAES-HAT System Combined Power and Heat Generation

更新时间：2025-07-09

- Thermodynamic Analysis for CAES-HAT System Combined Power and Heat Generation
- Vol. 50, Issue 7, Pages: 26-31(2016)
- 作者机构：
  
  1. 西安交通大学叶轮机械研究所,西安,710049
  2. 西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201607005
  CLC： TK02
- Online First：10 July 2016，
  
  Published：2016
- 稿件说明：
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Thermodynamic Analysis for CAES-HAT System Combined Power and Heat Generation[J]. 2016, 50(7): 26-31.
DOI：

Thermodynamic Analysis for CAES-HAT System Combined Power and Heat Generation[J]. 2016, 50(7): 26-31. DOI： 10.7652/xjtuxb201607005.

摘要

为提高传统压缩空气储能系统(CAES)的发电功率和能量利用率

设计了一种热电联供型湿空气透平循环的压缩空气储能系统(CAES-HAT)

其将水作为压缩过程储热介质、通过合理利用压缩热和排气热量、以湿空气和水为工质分别对外输出电量和热量

同时分析了关键参数对系统燃烧室燃料质量流量、透平功率、供电量、供热量和系统效率的影响

揭示了释能机组进口工质温度随参数变化的规律。研究结果表明

与传统CAES相比

CAES-HAT具有更高的发电功率和效率

在给定系统条件下机组发电功率增加19.17%

达到354.75 MW

供热功率达到66.36 MW

相同发电量下节省燃料18.17%

系统效率达到58.14%。释能机组的参数对发电功率影响明显

供电量和供热量对水气比变化敏感

该结果可为CAES系统优化提供参考。

Abstract

A combined heat and power system(CAES-HAT)based on humid air turbine cycle is proposed to improve turbine power and efficiency of the conventional CAES system

where water serves as the heat storage medium in charge process to utilize compression heat and exhaust air heat properly for generating electricity and heat with humid air and water as working media

respectively. The changing trends of combustor fuel flow rate

turbine power

electricity supply

heat supply and system efficiency are analyzed with respect to several key parameters. The trend of working medium temperature of discharge progress inlet is discussed by changing the above parameters. Compared with the conventional CAES system

the proposed CAES-HAT system produces more electricity power and operates more efficiently. The electricity power of the proposed system increases by 19.17% under the design condition and reaches 354.75 MW. The heat power reaches 66.36 MW and the system saves 18.17% of fuel with the same power generation

and its total efficiency reaches 58.14%. The parameters of discharge units affect electricity power obviously. Power and heat supply are more sensitive to liquid-to-gas ratio.

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references

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